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Intersil Corporation - Laser Diode Control

Numéro de référence X9523
Description Laser Diode Control
Fabricant Intersil Corporation 
Logo Intersil Corporation 





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X9523 fiche technique
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Dual DCP, POR, Dual Voltage Monitors
FEATURES
• Two Digitally Controlled Potentiometers (DCPs)
—100 Tap - 10kΩ
—256 Tap - 100kΩ
— Nonvolatile
—Write Protect Function
• 2-Wire Industry Standard Serial Interface
• Power-On Reset (POR) Circuitry
—Programmable Threshold Voltage
—Software Selectable reset timeout
—Manual Reset
• Two Supplementary Voltage Monitors
—Programmable Threshold Voltages
• Single Supply Operation
—2.7V to 5.5V
• Hot Pluggable
• 20 Pin Package
— TSSOP
• Pb-Free Plus Anneal Available (RoHS Compliant)
X9523
Laser Diode Control for Fiber Optic Modules
January 3, 2006
FN8209.1
DESCRIPTION
The X9523 combines two Digitally Controlled Potenti-
ometers (DCPs), V1 / Vcc Power-on Reset (POR) cir-
cuitry, qnd two programmable voltage monitor inputs
with software and hardware indicators. All functions of
the X9523 are accessed by an industry standard 2-Wire
serial interface.
The DCPs of the X9523 may be utilized to control the
bias and modulation currents of the laser diode in a Fiber
Optic module. The programmable POR circuit may be
used to ensure that V1 / Vcc is stable before power is
applied to the laser diode / module. The programmable
voltage monitors may be used for monitoring various
module alarm levels.
The features of the X9523 are ideally suited to simpli-
fying the design of fiber optic modules . The integra-
tion of these functions into one package significantly
reduces board area, cost and increases reliability of
laser diode modules.
www.DataSheet4U.com
BLOCK DIAGRAM
WP
SDA
SCL
MR
V3
V2
V1 / Vcc
DATA
REGISTER
COMMAND
DECODE &
CONTROL
LOGIC
THRESHOLD
RESET LOGIC
PROTECT LOGIC
8
CONSTAT
REGISTER
VTRIP3
VTRIP 2
VTRIP1
-
+
-
+
+
-
2
WIPER
COUNTER
REGISTER
7 - BIT
NONVOLATILE
MEMORY
WIPER
COUNTER
REGISTER
8 - BIT
NONVOLATILE
MEMORY
POWER-ON /
LOW VOLTAGE
RESET
GENERATION
RH1
RW1
RL1
RH2
RW2
RL2
V3RO
V2RO
V1RO
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
©2000 Intersil Inc., Patents Pending. Copyright Intersil Americas Inc. 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

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